linux-kernel - Re: [PATCH v2 2/2] dax,pmem: Implement pmem based dax data recovery

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Message-ID: <YYrRkpA0A/FXRpKS@infradead.org>
Date:   Tue, 9 Nov 2021 11:52:50 -0800
From:   Christoph Hellwig <hch@...radead.org>
To:     Dan Williams <dan.j.williams@...el.com>
Cc:     Christoph Hellwig <hch@...radead.org>,
        Jane Chu <jane.chu@...cle.com>, david <david@...morbit.com>,
        "Darrick J. Wong" <djwong@...nel.org>,
        Vishal L Verma <vishal.l.verma@...el.com>,
        Dave Jiang <dave.jiang@...el.com>,
        Alasdair Kergon <agk@...hat.com>,
        Mike Snitzer <snitzer@...hat.com>,
        device-mapper development <dm-devel@...hat.com>,
        "Weiny, Ira" <ira.weiny@...el.com>,
        Matthew Wilcox <willy@...radead.org>,
        Vivek Goyal <vgoyal@...hat.com>,
        linux-fsdevel <linux-fsdevel@...r.kernel.org>,
        Linux NVDIMM <nvdimm@...ts.linux.dev>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        linux-xfs <linux-xfs@...r.kernel.org>
Subject: Re: [PATCH v2 2/2] dax,pmem: Implement pmem based dax data recovery

On Tue, Nov 09, 2021 at 10:48:51AM -0800, Dan Williams wrote:
> I think we just make error management a first class citizen of a
> dax-device and stop abstracting it behind a driver callback. That way
> the driver that registers the dax-device can optionally register error
> management as well. Then fsdax path can do:

This sound pretty sensible.